diff --git a/python/ql/test/experimental/dataflow/model-summaries/InlineTaintTest.ext.yml b/python/ql/test/experimental/dataflow/model-summaries/InlineTaintTest.ext.yml
index e3a7e059401e..10fbd6df7448 100644
--- a/python/ql/test/experimental/dataflow/model-summaries/InlineTaintTest.ext.yml
+++ b/python/ql/test/experimental/dataflow/model-summaries/InlineTaintTest.ext.yml
@@ -3,7 +3,7 @@ extensions:
       pack: codeql/python-all
       extensible: summaryModel
     data:
-      - ["foo", "Member[MS_identity]", "Argument[0]", "ReturnValue", "value"]
+      - ["foo", "Member[MS_identity]", "Argument[0,x:]", "ReturnValue", "value"]
       - ["foo", "Member[MS_apply_lambda]", "Argument[1]", "Argument[0].Parameter[0]", "value"]
       - ["foo", "Member[MS_apply_lambda]", "Argument[0].ReturnValue", "ReturnValue", "value"]
       - ["foo", "Member[MS_reversed]", "Argument[0].ListElement", "ReturnValue.ListElement", "value"]
@@ -17,4 +17,5 @@ extensions:
       - ["foo", "Member[MS_append_to_list]", "Argument[1]", "ReturnValue", "taint"]
       - ["foo", "Member[MS_spread]", "Argument[0]", "ReturnValue.TupleElement[0]", "value"]
       - ["foo", "Member[MS_spread]", "Argument[1]", "ReturnValue.TupleElement[1]", "value"]
+      - ["foo", "Member[MS_spread_all]", "Argument[0]", "ReturnValue.TupleElement[0,1]", "value"]
       - ["json", "Member[MS_loads]", "Argument[0]", "ReturnValue", "taint"]
diff --git a/python/ql/test/experimental/dataflow/model-summaries/NormalDataflowTest.ext.yml b/python/ql/test/experimental/dataflow/model-summaries/NormalDataflowTest.ext.yml
index e3a7e059401e..10fbd6df7448 100644
--- a/python/ql/test/experimental/dataflow/model-summaries/NormalDataflowTest.ext.yml
+++ b/python/ql/test/experimental/dataflow/model-summaries/NormalDataflowTest.ext.yml
@@ -3,7 +3,7 @@ extensions:
       pack: codeql/python-all
       extensible: summaryModel
     data:
-      - ["foo", "Member[MS_identity]", "Argument[0]", "ReturnValue", "value"]
+      - ["foo", "Member[MS_identity]", "Argument[0,x:]", "ReturnValue", "value"]
       - ["foo", "Member[MS_apply_lambda]", "Argument[1]", "Argument[0].Parameter[0]", "value"]
       - ["foo", "Member[MS_apply_lambda]", "Argument[0].ReturnValue", "ReturnValue", "value"]
       - ["foo", "Member[MS_reversed]", "Argument[0].ListElement", "ReturnValue.ListElement", "value"]
@@ -17,4 +17,5 @@ extensions:
       - ["foo", "Member[MS_append_to_list]", "Argument[1]", "ReturnValue", "taint"]
       - ["foo", "Member[MS_spread]", "Argument[0]", "ReturnValue.TupleElement[0]", "value"]
       - ["foo", "Member[MS_spread]", "Argument[1]", "ReturnValue.TupleElement[1]", "value"]
+      - ["foo", "Member[MS_spread_all]", "Argument[0]", "ReturnValue.TupleElement[0,1]", "value"]
       - ["json", "Member[MS_loads]", "Argument[0]", "ReturnValue", "taint"]
diff --git a/python/ql/test/experimental/dataflow/model-summaries/model_summaries.py b/python/ql/test/experimental/dataflow/model-summaries/model_summaries.py
index c8c5ac0a8882..17f831f6ed12 100644
--- a/python/ql/test/experimental/dataflow/model-summaries/model_summaries.py
+++ b/python/ql/test/experimental/dataflow/model-summaries/model_summaries.py
@@ -30,12 +30,16 @@ def SINK_F(x):
 ensure_tainted = ensure_not_tainted = print
 TAINTED_STRING = "TAINTED_STRING"
 
-from foo import MS_identity, MS_apply_lambda, MS_reversed, MS_list_map, MS_append_to_list, MS_spread
+from foo import MS_identity, MS_apply_lambda, MS_reversed, MS_list_map, MS_append_to_list, MS_spread, MS_spread_all
 
 # Simple summary
 via_identity = MS_identity(SOURCE)
 SINK(via_identity)  # $ flow="SOURCE, l:-1 -> via_identity"
 
+# Simple summary keyword
+via_identity_kw = MS_identity(x = SOURCE)
+SINK(via_identity_kw)  # $ flow="SOURCE, l:-1 -> via_identity_kw"
+
 # Lambda summary
 via_lambda = MS_apply_lambda(lambda x: [x], SOURCE)
 SINK(via_lambda[0])  # $ flow="SOURCE, l:-1 -> via_lambda[0]"
@@ -114,6 +118,10 @@ def explicit_identity(x):
 SINK_F(x)
 SINK(y)  # $ flow="SOURCE, l:-2 -> y"
 
+a, b = MS_spread_all(SOURCE)
+SINK(a)  # $ flow="SOURCE, l:-1 -> a"
+SINK(b)  # $ flow="SOURCE, l:-2 -> b"
+
 # Modeled flow-summary is not value preserving
 from json import MS_loads as json_loads